A plastic food bag includes a first plastic foil and a second plastic foil. The first foil and the second foil are disposed adjacent to one another and are continuously merged together at three edges to form the plastic food bag. The first foil contains a printable area. The printable area includes at least one of a cover layer and a middle layer that includes a thermosensitive material that changes color when heated, or, alternatively, a printing layer. The printable area is printable after the forming of the plastic food bag.

A folded bag comprising a front side, a rear side, and left and right sides connecting the front and rear sides, each side having a top edge and a bottom edge; a plurality of left simple gussets and a plurality of right simple gussets formed in each of the left and right bag sides, respectively, wherein each simple gusset includes first and second outwardly-extending wings formed by respective first and second outwardly-extending folds and separated by an inwardly-extending fold; and a bottom edge seal subsuming all of the bottom edges such that the simple gussets are restrained from unfolding at the bottom edge seal and are unrestrained from unfolding along the top edges of the front, rear, and left and right sides. One or more of the simple gussets may be converted to a compound gusset by additional longitudinal folding, thus reducing further the folded width of the bag.

A roll of heat sealable bags having markings on the bags to indicate the weight of a portion of bag material located between any two markings. A user can cut off any desired length of the roll to form a customized bag of a desired size. The user can then quickly determine the weight of the customized bag by visual inspection of the number of markings on the bag. After filling the bag with items to be packaged, the markings allow the user to determine an accurate weight of the contents of the bag by weighing the filled bag and subtracting the weight of the bag material from the overall weight of the bag plus contents.

A self-opening bag includes front and real walls joined at their respective first and second side and bottom edges. The bag is folded at least once parallel to its side edges. At least one attaching feature is located on the outer surface of the bag adjacent the upper end and between the folded walls. The bag is releasably attached to a subsequent bag. The at least one attaching feature causes the bag to open as the bag is pulled from the subsequent bag. The once folded bag may be sealed at the bottom edges after folding to form a star-sealed bag bottom. The bags may be removably attached to each other at a perforation line and wound onto a compact roll for use with a bag dispenser. The bags may have an upper seam, a U-shaped cut and a pair of bag handles. The bags may be corona treated.

A roll of dog waste bags that allow single bays to be pulled off the roll reliably one by one. The device may include interlocking layers, adhesives, or both to achieve this. The device includes an inner core such that it can be used on existing pet waste bag holders.

An exemplary web of preformed bags includes first and second layers, first and second side, first and second side seals proximate the first and second edges, a plurality of transverse seals extending between the first and second side edges, an opening in the first layer, and a line of separation in the second layer, and first and second cuts in the first and second side seals. The first and second cuts are configured to reduce or eliminate a breaking force necessary to break the first and second side seals when the web is torn along the line of separation.

A disposable animal waste bag comprising a roll of plastic bags, the roll comprising: a) a plurality of tubular plastic bags comprising an opening, a first edge, a second edge, a closed third edge, a first side and a second side, comprising i. a plurality of starting bags, and ii. a plurality of final bags; and b) an indicator system comprising the plurality of final bags, wherein the indicator system indicates that the roll has only has the plurality of final bags remaining in the roll and that a new roll is needed.

A method of manufacturing a roll of bags includes: moving a layflat tubing from a feed end toward a produce end of a workstation; sealing the layflat tubing to form sealing lines along a width direction of the layflat tubing; punching the layflat tubing to form punching lines along the width direction; spraying, by a coding machine coupled to the workstation, at least one counting mark on the layflat tubing; cutting by the workstation, the layflat tubing along the width direction to form connected bags; and winding the connected bags into the roll of bags. The connected bags are separated by the punching lines, each bag has one of the sealing lines, and at least one bag has the at least one sprayed counting mark that counts its relative position in the roll of bags.

A paint roller and paint brush bag dispensing system for conveniently providing storage for bags to preserve or dispose of paint roller covers and paint brushes features a body with a body cavity located inside. The system includes a paint roller bag dispenser device, a paint roller cover, a paint roller cover frame with handle, a plastic bag roll, and an optional paint extension pole. A bag slot is located on a body side wall and is fluidly connected to the body cavity. A first male attachment is located on a body first end and a mated first female attachment is located on a body second end. The system features a roll of plastic bags attached to one another in the body cavity. A first end of the roll of plastic bags is placed through and extends from the bag slot for pulling out a bag and detaching it from the roll of plastic bags when needed.

Biodegradable bags for disposing of a unwanted substance are formed from a bioplastic material made from a bio based material in the form of a maize flour, and a biodegradable plasticizer selected from the group consisting of vegetable oil, polyesters made from glycerin, glycerin, derivatives of glycerin, and combinations thereof. The maize flour comprises a minor volume percent of the total volume of the bioplastic material. A biodegradable additive is used to provide a degree of stiffness to the material, a preferred additive being polylactic acid. A UV stabilizer may optionally be included. Biodegradable bags have an open end and a closed end with a sidewall extending therebetween. The bag includes a feature for enclosing a substance once placed into the bag. In an example, the feature comprises an opening through a sidewall. Alternatively, the feature may include an adhesive section.